Known Issues<\/a> page on the wiki.<\/p>\nWhile this issue will not affect most users (this is why no one, including me, noticed it until now), I am currently working on a fix. \u00a0Initially I had hoped that I could fix the problem in software, but after spending far too much time pursuing that approach, I have decided to address it with a hardware change instead. \u00a0This should make for a much more robust solution. \u00a0I’m in the process of revising the hardware this week and hope to release a new version of the shield in the near future.<\/p>\n
As soon as I heard about the issue in December, I stopped taking orders for Rescue Shield kits. \u00a0Kits and PCBs will show up as out of stock until I release the new version.<\/p>\n
I’ll post another update when I have an estimate of when kits will be available again.<\/p>\n
Thanks for your patience!<\/p>\n","protected":false},"excerpt":{"rendered":"
Just before the holidays, an issue with the Rescue Shield 2.0 (which I have at times referred to as “2.x”) was identified. \u00a0The issue involves problems reading\/writing to parts that have certain startup timer (SUT) fuse values set. There is some more information about the issue on the forums and in a previous post here … Continue reading HV Rescue Shield 2.0 status update<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[65,10],"tags":[364],"class_list":["post-3543","post","type-post","status-publish","format-standard","hentry","category-kits","category-microcontrollers","tag-hvrescue"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pioCd-V9","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack-related-posts":[{"id":3620,"url":"https:\/\/mightyohm.com\/blog\/2011\/02\/hv-rescue-shield-2-1-now-shipping\/","url_meta":{"origin":3543,"position":0},"title":"HV Rescue Shield 2.1 Now Shipping","author":"Jeff","date":"February 7, 2011","format":false,"excerpt":"I have good news. \u00a0The latest and greatest version of the HV Rescue Shield is now available! Version 2.1 contains a new and improved 12V switching circuit that resolves an issue reading\/writing to parts with certain startup timer settings. \u00a0This issue affects all previous versions of the Rescue Shield kit.\u2026","rel":"","context":"In "Electronics"","block_context":{"text":"Electronics","link":"https:\/\/mightyohm.com\/blog\/category\/electronics\/"},"img":{"alt_text":"HV Rescue Shield 2.1","src":"https:\/\/i0.wp.com\/mightyohm.com\/files\/flickr\/5418114324_df1976bef0.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":3519,"url":"https:\/\/mightyohm.com\/blog\/2010\/12\/issue-with-rescue-shield-and-targets-with-sut-0ms\/","url_meta":{"origin":3543,"position":1},"title":"Issue with Rescue Shield and targets with SUT = 0ms","author":"Jeff","date":"December 21, 2010","format":false,"excerpt":"HV Rescue Shield 2.0 customer Matthew Beckler has uncovered an issue that affects all variants of the Rescue Shield. Long story short, if the target AVR is configured for a fast internal clock and zero\u00a0startup time (eg. LFUSE=0x62 on the ATtiny13A gives a 9.6MHz clock with 14CK +0ms startup delay),\u2026","rel":"","context":"In "Microcontrollers"","block_context":{"text":"Microcontrollers","link":"https:\/\/mightyohm.com\/blog\/category\/microcontrollers\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1399,"url":"https:\/\/mightyohm.com\/blog\/2009\/03\/avr-hv-rescue-shield-pcbs-are-in-kits-available-soon\/","url_meta":{"origin":3543,"position":2},"title":"AVR HV Rescue Shield PCBs are in, kits available soon.","author":"Jeff","date":"March 3, 2009","format":false,"excerpt":"Big news - the AVR HV Rescue Shield PCBs arrived yesterday!\u00a0 I'm currently testing them and will post information about kits for sale as soon as I verify that everything is working properly. This is actually the second spin of the PCB but the first to bear the 'Rescue Shield'\u2026","rel":"","context":"In "Microcontrollers"","block_context":{"text":"Microcontrollers","link":"https:\/\/mightyohm.com\/blog\/category\/microcontrollers\/"},"img":{"alt_text":"AVR HV Rescue Shield PCB - Top","src":"https:\/\/i0.wp.com\/mightyohm.com\/blog\/wp-content\/uploads\/2009\/03\/jsk_021809_top-419x500.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":3404,"url":"https:\/\/mightyohm.com\/blog\/2010\/12\/hv-rescue-shield-2-0-update\/","url_meta":{"origin":3543,"position":3},"title":"HV Rescue Shield 2.0 update","author":"Jeff","date":"December 2, 2010","format":false,"excerpt":"Version 2.0 of the HV Rescue Shield (I decided to drop the 'AVR' from the name) will add support for high voltage serial programming (HVSP) and 8-pin parts like the ATtiny13A. Boards are due back next week, components are on order, but there is still code to write. Back to\u2026","rel":"","context":"In "Electronics"","block_context":{"text":"Electronics","link":"https:\/\/mightyohm.com\/blog\/category\/electronics\/"},"img":{"alt_text":"HV Rescue Shield 2.0","src":"https:\/\/i0.wp.com\/mightyohm.com\/files\/flickr\/5227880978_96728fa09d.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":2966,"url":"https:\/\/mightyohm.com\/blog\/2010\/06\/hv-rescue-shield-sale\/","url_meta":{"origin":3543,"position":4},"title":"Sale: 20% off AVR HV Rescue Shield","author":"Jeff","date":"June 16, 2010","format":false,"excerpt":"Now through July 9th, order an AVR HV Rescue Shield kit and get 20% off! AVR HV Rescue Shield Kit - $19.95","rel":"","context":"In "Electronics"","block_context":{"text":"Electronics","link":"https:\/\/mightyohm.com\/blog\/category\/electronics\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/mightyohm.com\/blog\/wp-content\/uploads\/2009\/03\/rescue-shield-with-atmega2_scaled-500x375.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":3480,"url":"https:\/\/mightyohm.com\/blog\/2010\/12\/new-product-hv-rescue-shield-2-0\/","url_meta":{"origin":3543,"position":5},"title":"New Product: HV Rescue Shield 2.0","author":"Jeff","date":"December 13, 2010","format":false,"excerpt":"The HV Rescue Shield 2.0 is a high voltage parallel mode fuse programmer for Atmel AVR microcontrollers. It currently supports a wide variety of AVR chips, including the 28-pin ATmega48\/88\/168\/328 series, the 20-pin ATtiny2313, and many 8-pin ATtiny devices (such as the ATtiny25\/45\/85 and ATtiny13A). \u00a0A\u00a0list of supported devices is\u2026","rel":"","context":"In "Microcontrollers"","block_context":{"text":"Microcontrollers","link":"https:\/\/mightyohm.com\/blog\/category\/microcontrollers\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/mightyohm.com\/blog\/wp-content\/uploads\/2011\/12\/hvrescue21.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/mightyohm.com\/blog\/wp-json\/wp\/v2\/posts\/3543","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mightyohm.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mightyohm.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mightyohm.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/mightyohm.com\/blog\/wp-json\/wp\/v2\/comments?post=3543"}],"version-history":[{"count":4,"href":"https:\/\/mightyohm.com\/blog\/wp-json\/wp\/v2\/posts\/3543\/revisions"}],"predecessor-version":[{"id":3547,"href":"https:\/\/mightyohm.com\/blog\/wp-json\/wp\/v2\/posts\/3543\/revisions\/3547"}],"wp:attachment":[{"href":"https:\/\/mightyohm.com\/blog\/wp-json\/wp\/v2\/media?parent=3543"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mightyohm.com\/blog\/wp-json\/wp\/v2\/categories?post=3543"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mightyohm.com\/blog\/wp-json\/wp\/v2\/tags?post=3543"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}