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by blotvard
Oct 23rd, '18, 21:33
Forum: Yocto v1.0 Hardware
Topic: The RNZ suffix of the 2SC828
Replies: 5
Views: 9554

Re: The RNZ suffix of the 2SC828

Thanks for the update. In part one I said that a perfect clone isn’t possible without a 2SC828-R NZ. All of the testing that I have done since writing part 1 of this article has however shown me that getting close enough is definitely possible with the right 2SC945P. The next step is to use a 2SC828...
by blotvard
Oct 12th, '18, 17:15
Forum: Yocto² Software
Topic: Official Yocto² Firmware
Replies: 25
Views: 58884

Re: Official Yocto² Firmware

Thank you for updating the zip with the hex file :D
by blotvard
Oct 3rd, '18, 16:27
Forum: Yocto² Software
Topic: Official Yocto² Firmware
Replies: 25
Views: 58884

Re: Official Yocto² Firmware

Can I has hex file pls? I flashed ma chip and it got no bootloader :(
by blotvard
Apr 6th, '18, 22:32
Forum: Yocto² Software
Topic: Current Yocto2 OS in HEX
Replies: 4
Views: 10734

Re: Current Yocto2 OS in HEX

No need, I just flashed a new chip with the programmer.
by blotvard
Feb 4th, '18, 22:11
Forum: Yocto² Hardware
Topic: Maracas and BD Level
Replies: 2
Views: 3310

Re: Maracas and BD Level

There's a post about matching output levels on the Yocto v1: viewtopic.php?f=16&t=414&p=2613&hilit=cowbell#p2613
Maybe could be applied on the Yocto v2?
by blotvard
Nov 29th, '17, 15:26
Forum: Yocto² Hardware
Topic: Accent issue - BD, SD, Toms, RM, HC & CB [SOLVED]
Replies: 8
Views: 7283

Re: Accent issue - BD, SD, Toms, RM, HC & CB [SOLVED]

You're welcome. I'm glad it's all working now.
Good find on fixing the traces from the MCU to IC3. I burnt out a trace in the noise circuit, swapping out the trimmer to get 130mV. It's easy done.
by blotvard
Nov 27th, '17, 20:36
Forum: Yocto² Hardware
Topic: Accent issue - BD, SD, Toms, RM, HC & CB [SOLVED]
Replies: 8
Views: 7283

Re: Accent issue - BD, SD, Toms, RM, HC & CB [SOLVED]

First make sure the MCP4822 TP1 is providing +13V. Then, using this part of the schematic for the accent: https://i.imgur.com/J7aUHwSh.jpg These two are from the MCU pins 20 & 21: INH_MUX1 INH_MUX2 So, something is causing them to read incorrectly. I would start there and ensure the MCU socket i...
by blotvard
Nov 17th, '17, 20:08
Forum: Yocto² Hardware
Topic: Noise problem
Replies: 14
Views: 17561

Re: Noise problem

Replacing U24 with a TL072 and changing TM4 for a 100k got it to 130mV RMS. I could only get it to 160mV with the 4558 and the 100k trimmer.
by blotvard
Nov 14th, '17, 21:03
Forum: Yocto² Hardware
Topic: Accent issue - BD, SD, Toms, RM, HC & CB [SOLVED]
Replies: 8
Views: 7283

Re: Accent issue - BD, SD, Toms, RM, HC & CB

Replace IC3 (4049). Problem solved.
ESD? Floating pin? Latch-up? PEBCAK? I've learned some terms :mrgreen:
by blotvard
Nov 13th, '17, 18:14
Forum: Yocto² Software
Topic: Current Yocto2 OS in HEX
Replies: 4
Views: 10734

Re: Current Yocto2 OS in HEX

Here it is with Vincent's permission: Yocto_v2_002.hex

I used a TL866 programmer with the following settings:

Fuse Low Byte: 0xD6
Fuse High Byte: 0xDC
Extended Fuse Byte: 0xFD
Lock Bit Byte: 0xFF

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