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- LongJ commented on pjnovas's instructable All in One Arcade System
- LongJ commented on raht's instructable Arduino Pocket Lightning Detector
You can test it by using the serial terminal in the Arduino IDE. It should how a bunch of information and also you can test the indoor/outdoor buttons and it should show which you pressed ... however the Celsius/Fahrenheit function doesn't seem to provide any feedback to the terminalIf you see ome feedback in the terminal then the module is working and the display is likely the problem
View Instructable »I'm with you, these 5110 displays are complete junk .... out of 3 of them from 2 different sources I only got one to show a display and it was so dodgy that I eventually broke it pressing on it all the time ..... All of them on Amazon have a pathetic 2 of 5 star ratings and nothing but complaints ... This project definitely needs to be reworked for a better display than these hunks of junk ....
- LongJ commented on theGHIZmo's instructable Android APP to Control a 3DPrinted RobotView Instructable »
Actually you can use the Bluetooth to upload new firmware, I do it all the time on an Uno. You just need to use a laptop or tablet with Bluetooth and the Arduino IDE will see it as a serial port just like the USB ......
- LongJ commented on Ystem's instructable Improving 3D Prints With HairsprayView Instructable »
Nothing worse for smooth rods and linear bearings than getting hairspray on them and it's going to get into everythingBest to use removable glass and spray well away from your printer, especially an expensive Lulzbot
- LongJ commented on raspberrypi33's instructable How to Install Pronterface on Raspberry PiView Instructable »
Thanks I'll give that a try some time. I have a Pi 3 with a 5" touchscreen running octoprint but a lightweight interface like this can be handy for tweaking and setups after upgrades ..... And there is always another upgrade. it's mounted on a small worktable with locking wheelsI'm looking to make something that I can download from thingieverse, slice it and print making the printer standalone needing only a power outlet and a WiFi network This coming summer a buddy and I are going to load it in my modified jon boat run it off the boat's wifi network/AP and run the unit from my deep cycle storage cells and making a video of it printing "out in the wild" something I want for my boat or a 3D printed lure and then catch a fish with it. Just because I can ...... and I haven'…
see more » - LongJ commented on raspberrypi33's instructable How to Install Pronterface on Raspberry PiView Instructable »
Ok what do you call the text file for the desktop icon and where do you put itSeems like that might be kind of important
- LongJ commented on made2hack's instructable How to - Make a $25 Oscilloscope
The reason they need 9V is because they have an switching voltage inverter so they can feed the input op amps a bipolar DC voltage so they can be DC coupled. You can't do that with a single supply. Since the are using classic 78/79Lxx linear regulators they need at least 7 volts and since they use a series diode as reverse polarity protection you need at least 7.7 v and in practical use 8 v ..... In other words only 6 NiMH rechargeables (7.2 v) or 2 Li-on batteries (7.4 v) in series isn't going to cut it. It's either one more battery or disposable alkalines Dig out the schematic and then use the scope to explore the waveforms around that switching voltage inverter circuit. Since everything on the board is already grounded to the same ground as the input you only need to use red lead or …
see more »View Instructable »It's a $21 dollar o-scope that can measure and display volts, frequency, time period, etc.... Get real for cripes sakes ..... 20 years ago this would have cost several hundred bucks..... Sure there are some that are faster for under $100 but they are only 8 bit and thus have horrible vertical resolution at any frequency .... Below 200 khz this thing will eat their lunch since you are talking about a vertical resolution of 256 levels vs the 4096 levels this device gives you .... I have a 50 Mhz storage scope and a classic 20 Mhz Hitachi V-212 (dollar for dollar one of the best analog o-scopes ever made) but I'm getting one of these, printing a nice case with battery compartment and use it as a portable ..... It also looks pretty hackable to me and if you bork it you aren't out much and st…
see more » - LongJ commented on marshallpeck's instructable Enable Auto Leveling for your 3D Printer with an inductive sensor (Marlin Firmware)View Instructable »
Most likely it's defective. If you twist or try to remove the yellow cap you'll break off the little wire coming off the coil that goes to the potted electronics inside the metal shell. When that happens it causes it to be stuck on (triggered) all the time since it cannot sense the coil. I bet a lot of these get broken and then returned and the supplier just ships them back out again and when they return a second time they throw it away as defective, if it doesn't come back then the original customer didn't use it right Instead of testing the returns themselves they just ship it out and let some sucker do the retest.DO NOT TWIST OR TRY TO REMOVE THE YELLOW OR BLUE CAP .... You'll break it every time
I built one of these https://www.thingiverse.com/thing:2253222 and used the exact same DPDT switch setup so I could still use the stick for my PC emulator setup (Launchbox) While the Raspi is great for 8 and 16 bit emulators it's starts to fall down with the N64 or PS1/PS2 and a couple of other emulators so I run those emulators on a PC