Ben Ryves

@benryves.com

130 Followers 119 Following

Croydon-based web developer, retro gaming and computing enthusiast and electronics hobbyist

Photo of a Casio fx-7000G calculator showing the output of a program that draws a Sierpinski triangle.
Photo of a Casio fx-7000G "Graphics" calculator
Photo of half a pint of cider
Photo of a Texas Instruments Galaxy 67 programmable scientific calculator next to its box, hard slide case and instruction manual.
Photo of a bicycle with a horse standing behind a gate in the background.
Photo showing a thermometer reporting an indoor temperature of 34.1°C (~93°F).
Photo of several blooming sunflowers.
People sitting outside an industrial unit drinking beer.
3D render of the PCB design for the pocket computer interface that includes a serial port and a parallel port.
Photo of a ragwort plant covered in cinnabar moth caterpillars.
Photo of a Casio FX-730P pocket computer with a circuit board plugged in. The circuit board has a serial port on it. It also has a light shining and the computer's screen says "AF:GOLF" on it.
Photo of a new bag of PCB standoffs with a 1995 date code on them.
Photo of a box of circuit boards next to a bundle of wires, crimp contacts and a crimp tool.
Photo of a Casio FX-730P with the back removed, showing an 8KB memory pack installed inside.
Photo of a SHARP IQ-8000 organiser with a BASIC listing occupying only the leftmost 16 columns of the screen.
Photo of a SHARP Scientific Computer Card IQ-8B03 and its manual.
Photo of several sunflower plants in pots.
Photo of basil, echinacea and rosemary seedlings in small pots.
Photo of three Sharp pocket computers in their respective printer/cassette interfaces, each having printed a monthly calendar for June 2026.
Photo of a TI-83 Plus Silver Edition alongside two ViewScreens.
"The Band With Rocks In" from the cover of Terry Pratchett's "Soul Music", painted by Josh Kirby.
Photo of inside the pocket TV, showing the circuit board in the rear half. Three large electrolytic capacitors are visible at the bottom edge of the board.
Screenshot of an eBay listing for an old pocket TV, sold for £3.99.
Photo of the inside of a Casio CP-10 calculator, showing a leaky Ni-Cd battery pack.
Photo of a Casio PB-100 pocket computer next to its soft carrying case. Its instruction manual and a guide to learning BASIC are pictured above it.
Photo of a man standing in front of the Prince Charles Cinema
Photo of rebuilt battery pack using six of the Ni-MH cells.
Photo of seven Ni-MH cells inside a plastic frame to to act as a rechargeable 9V battery.
Photo of a shelf in a branch of CeX, showing 46 copies of the film "Leather Orgy".
Photo of damaged labels salvaged from old electronics, including a Casio NP-612 battery label damaged by battery leakage and an attempted recreation underneath.
Photo of the modified RS-232 interface box with a new "CASIO PC Link" label stuck on the front.
Photo of the inside of a PC Link Model DTL-388D RS-232 interface for Packard Bell Organisers.
Photo of a bicycle in a park under a blossoming tree.
Photo of a Casio CP-9 Copy Pen/Handy Copy next to a KL-2000 label printer.
Photo of the seven cells with the top one's outer insulation cut away so it could be removed from the pile.
Photo of an old proprietary 7.2V battery showing the six AAAA cells inside. Next to it is the modern battery, revealing the seven internal cells.
Photo of 9V rechargeable battery packaging showing it to be part of the "170 series" but rated for only 160mAh.
Photo of a plastic bicycle crank dust cover
Photo of bluebells carpeting the woodland floor.
Photo of a battery pack made of five Ni-MH AA cells installed in the back of the label printer.
Photo of a Casio KL-2000 EZ-Label Printer connected to a Casio CFX-9850G graphical calculator. A small printed label is sitting on the calculator LCD.
Photo of a CFX-9850G calculator and its manual showing that the it supports printing to a label printer.
Photo of the battery compartment inside a KL-2000 label printer showing crusty leaky Ni-CD cells.
Photo of a Game Boy made out of Lego next to a pile of cartridges topped by a Super Mario Land cartridge (also made of Lego). A yellow Game Boy Pocket showing the same scene from the Super Mario Land on the Lego Game Boy is shown underneath.
Photo of John Carpenter and band playing a concert with a screen behind them showing a clip from his film "Christine".
Photo of an HP-12C financial calculator and a Casio fx-3800P scientific calculator.
Part of the CE-122's circuit diagram, with two diodes relating to the remote control switching highlighted.
Photo of a faint printout from the printer. At first there are rows of asterisks that don't reach the right hand side of the paper. Further down are rows of text that do reach the right side, indicating an intermittent fault.
Photo of a Sharp PC-1211 pocket computer in its CE-122 printer and cassette interface. A data cassette recorder is also connected, and the printer is showing a biorhythm plot.
Photo of eight stamps in a frame with the caption "Video Games" underneath. The stamps show scenes from selected British video games: Elite, Worms, Sensible Soccer, Lemmings, Wipeout, Micro Machines, Dizzy and Populous.
Photo of a table in a café with two fried breakfasts on it and a lady smiling at them.
Screenshot of an example sentence from Duolingo, stating 君たちの基地は、全て私たちがいただいた。 translated as "We have taken over all of your bases".
Photo of a video game disc where the title and the logo of the game console it is for have been scribbled over in black permanent marker.
Photo of 10 assembled "De-Dead Zone" modification circuit boards.
Photo of work bench set up with a tea towel surrounded by unpopulated PCBs, electronic components and a soldering iron.