Charity Shop Garbage RC Car data sheet PT8A978 5-function Remote Controller
4,967 views · Published 28 November 2014 · 3:11 · Indexed 8 November 2026
Channel: GrandadIsAnOldMan · 2014 · Science & Technology
I downloaded the data sheet for the Pericom Technology Inc. PT8A978 5-function Remote Controller I connected a wire to pin 4 and the receiver now functions fully. The other end of the wire is unterminated. The resistor between pins 4 and 5 set the oscillator for the timing signal. The signal received by the antenna is amplified in 2 stages on the chip before going to the signal input pin. Stage 1 is 'in' on pin 14 'out' on pin 15 Stage 2 is 'in' on pin 16 'out' on pin 1 Then the signal goes in on pin 3 which is the 'signal in' My opinion is that somehow this wire is acting as an antenna and synchronising the oscillator so that it recognises the signal received from the original antenna. Touching the same wire on any other pin does not make the receiver work and I have traced out the track from the antenna and can find no problems. That does not mean that aren't any, but I cannot see any. This playlist covers the work I did on the blue car to get it working https://www.youtube.com/playlist?list=PLA5a2xPRSrB0lU47dNtzBs2XKLwrDhYvr Data sheet for the PT8A798 http://html.alldatasheet.com/html-pdf/155401/PERICOM/PT8A978P/295/1/PT8A978P.html The pins I was working on are labelled OSC1 and OSC0 which appears to be something to do with the Timing Generator Filmed using FujiFilm FinePix S4800 Edited using Serif MoviePlus Starter Edition I have now created a short playlist for the work I did on the blue car to get it working https://www.youtube.com/playlist?list=PLA5a2xPRSrB0lU47dNtzBs2XKLwrDhYvr Radio Control playlist https://www.youtube.com/playlist?list=PLA5a2xPRSrB13Xcquw4Ff09MQzTPjeVkI Charity Shop playlist https://www.youtube.com/playlist?list=PLA5a2xPRSrB14bwwnAIt54ZWwWBktc445 My Channel page https://www.youtube.com/user/GrandadIsAnOldMan Oldest videos https://www.youtube.com/user/GrandadIsAnOldMan/videos?flow=grid&view=0&sort=da Most Popular https://www.youtube.com/user/GrandadIsAnOldMan/videos?sort=p&flow=grid&view=0 Newest videos https://www.youtube.com/user/GrandadIsAnOldMan/videos?sort=dd&view=0&flow=grid Playlists https://www.youtube.com/user/GrandadIsAnOldMan/playlists?flow=grid&view=1 I have thousands of videos on YouTube, to find one try my search guides https://youtu.be/ceBSOoOHcgw or https://youtu.be/Zj4UgwkwYRk My "GrandadsOtherChannel" channel is generally where I will host the videos that give extra detail or longer versions of the videos I post on my main channel https://www.youtube.com/channel/UC2mp_L8RoxMyw3ewwSecZ6Q Facebook https://www.facebook.com/grandadisanoldman/ Merchandise - Check both of these links if you are interested as the prices will vary and the shipping charges will be different. http://www.redbubble.com/people/grandadiaom/portfolio http://grandadisanoldman.cottoncart.com/
