gary wrote:Hacking it before building it? Great stuff Steve.
Just considering possiblities as I get more familiar with the device. This first one will be built as advertised.
Something else I have considered...this micro can run at higher speeds, replacing the crystal with a 16MHz version should double the bandwidth. But with the current software the horizontal scales will be a factor of two out. Where it might say 500us/div it actually will be 250us/div. Again, something for the future.
At above the current 200kHz limit (their specification) the TL084 quad op-amp may run out of steam at the higher gain settings. Always a comprimise in this game.
However, it begs the question, why haven't the original designers (whoever they may be) done this? Perhaps to protect their higher-end products, "We can't have these el-cheapo products becoming as good as our top-end stuff can we?"
Steve A.